2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (c) 2014 Filipe Manana. All Rights Reserved.
5 # FS QA Test No. btrfs/034
7 # Test for a btrfs incremental send data corruption issue due to
8 # bad detection of file holes.
11 _begin_fstest auto quick send
15 # Override the default cleanup function.
21 # Import common functions.
24 # real QA test starts here
27 _require_xfs_io_command "falloc"
29 _scratch_mkfs >/dev/null 2>&1
32 # Create a file such that its file extent items span at least 3 btree leafs.
33 # This is necessary to trigger a btrfs incremental send bug where file hole
34 # detection was not correct, leading to data corruption by overriding latest
35 # data regions of a file with zeroes.
37 $XFS_IO_PROG -f -c "truncate 104857600" $SCRATCH_MNT/foo
39 for ((i = 0; i < 940; i++))
41 OFFSET=$((32768 + i * 8192))
42 LEN=$((OFFSET + 8192))
43 $XFS_IO_PROG -c "falloc -k $OFFSET $LEN" $SCRATCH_MNT/foo
44 $XFS_IO_PROG -c "pwrite -S 0xf0 $OFFSET 4096" \
45 $SCRATCH_MNT/foo | _filter_xfs_io
48 _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap1
50 $XFS_IO_PROG -c "truncate 3882008" $SCRATCH_MNT/foo
52 _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap2
54 _run_btrfs_util_prog send -f $tmp/1.snap $SCRATCH_MNT/mysnap1
55 _run_btrfs_util_prog send -f $tmp/2.snap -p $SCRATCH_MNT/mysnap1 \
58 md5sum $SCRATCH_MNT/foo | _filter_scratch
59 md5sum $SCRATCH_MNT/mysnap1/foo | _filter_scratch
60 md5sum $SCRATCH_MNT/mysnap2/foo | _filter_scratch
63 _check_btrfs_filesystem $SCRATCH_DEV
64 _scratch_mkfs >/dev/null 2>&1
67 _run_btrfs_util_prog receive -f $tmp/1.snap $SCRATCH_MNT
68 md5sum $SCRATCH_MNT/mysnap1/foo | _filter_scratch
70 _run_btrfs_util_prog receive -f $tmp/2.snap $SCRATCH_MNT
71 md5sum $SCRATCH_MNT/mysnap2/foo | _filter_scratch
74 _check_btrfs_filesystem $SCRATCH_DEV